Radiation imagery chemistry: process – composition – or product th – Transfer procedure between image and image layer – image... – Diffusion transfer process – element – or identified image...
Patent
1979-05-02
1981-01-06
Louie, Jr., Won H.
Radiation imagery chemistry: process, composition, or product th
Transfer procedure between image and image layer, image...
Diffusion transfer process, element, or identified image...
430213, 430394, 430434, 430203, 430237, 430238, G03C 532
Patent
active
042437385
ABSTRACT:
A process for amplifying an imagewise exposure of a silver halide photographic element comprises the steps of (a) developing the element to release spectral sensitizing dye from a release compound as a function of silver halide development; (b) adsorbing the spectral sensitizing dye to undeveloped silver halide grains; (c) exposing the element overall to radiation absorbable by released spectral sensitizing dye to render developable silver halide grains to which the released spectral sensitizing dye has been adsorbed and (d) developing silver halide grains.
REFERENCES:
patent: 3796579 (1974-03-01), Brooker
patent: 3980479 (1976-09-01), Fields
patent: 4053312 (1977-10-01), Fleckenstein
patent: 4055428 (1977-10-01), Koyama et al.
patent: 4076529 (1978-02-01), Fleckenstein et al.
patent: 4139379 (1979-02-01), Chasman et al.
Gilman, Jr. Paul B.
Haase Jan R.
Eastman Kodak Company
Levitt Joshua G.
Louie, Jr. Won H.
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